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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

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Endpoint:
melting point/freezing point
Type of information:
other: handbook data
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance".
Qualifier:
no guideline followed
Principles of method if other than guideline:
Not applicable - Handbook data
GLP compliance:
not specified
Type of method:
other: no data
Atm. press.:
ca. 1 013 mBar
Decomposition:
yes
Decomp. temp.:
ca. 1 300 °C
Remarks on result:
other: Decomposes into BaO and CO2.
Conclusions:
According to the reference, barium carbonate has a decomposition temperature of about 1300°C.
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Comparable to guideline study without restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
yes
Remarks:
;The heating rate of the sample from the room temperature to intermediate one (20K lower than the desired temperature) was 10 K min^-1 and from intermediate to the desired temperature was 2 k min^-1.
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
yes
Remarks:
; The heating rate of the sample from the room temperature to intermediate one (20K lower than the desired temperature) was 10 K min^-1 and from intermediate to the desired temperature was 2 k min^-1.
GLP compliance:
not specified
Type of method:
thermal analysis
Remarks:
DSC
Atm. press.:
0.003 Pa
Decomposition:
yes
Decomp. temp.:
ca. 787 °C
Conclusions:
According to the reference, barium carbonate has a decomposition temperature of ca. 787°C at 0.003 Pa.
Endpoint:
melting point/freezing point
Type of information:
other: handbook data
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance".
Qualifier:
no guideline followed
Principles of method if other than guideline:
Not applicable - Handbook data
GLP compliance:
not specified
Type of method:
other: no data
Atm. press.:
ca. 1 013 mBar
Decomposition:
yes
Decomp. temp.:
1 380 °C
Conclusions:
Barium carbonate has no melting point, the substance decomposes at 1380°C at atmosperic pressure.

Description of key information

Barium carbonate has no melting point, the substance decomposes at 1380°C at atmospheric pressure.

Key value for chemical safety assessment

Additional information

According to reliable handbook data (e.g. CRC handbook) the decomposition temperature of Barium carbonate is 1380°C at atmospheric pressure. Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance" and therefore, the decomposition temperature could be regarded as valid.